Hello,
I was able to load one (1) music STYLE from a USB stick into my PSR S770 this past weekend.
Thrilled (finally) with this first-time success.
So I went to the web at PSR Tutorial site and loaded (unzipped where necessary) dozens of more music STYLES.
I can not find instructions in either the Owners Manual or Reference Guide for how to "step-by-step"
(make the required button presses on my S770) to load these STYLES from my USB stick into the new instrument.
Can you help me please? Many thanks.

Select a style category.
Page over to USB (at the top of the keyboard) You will see Preset (Factory), User and USB pages.
Then select the style from the menu on your USB stick.

Hi,

I play ALL add on styles direct from my USB stick. No need to load into the Yamaha first!

Henni

Agreed. Rather than load up the internal memory with external styles, voices, multipads,
midi files and MP3s, I put them on a USB stick. All registrations I create are also saved to the stick.
Everything on that stick is saved to a computer and on other sticks as backup. I got in the habit before
Yamaha increased the internal memory size. But it is also less confusing, because everything I need is
is on the stick in the event I want to add, edit, or change anything.
Eddie

Thank you very much for your helpful answers. Certainly appreciated.
have a great evening